Chemistry Which of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torch lights, electric shavers, etc. ? Nickel and cadmium Iron and cadmium Zinc and carbon Lead peroxide and lead Nickel and cadmium Iron and cadmium Zinc and carbon Lead peroxide and lead ANSWER DOWNLOAD EXAMIANS APP
Chemistry Diamond is harder than graphite because of : Difference in layers of atoms None of these Difference of crystalline structures Tetrahedral structure of diamond Difference in layers of atoms None of these Difference of crystalline structures Tetrahedral structure of diamond ANSWER DOWNLOAD EXAMIANS APP
Chemistry When a metal is heated in a flame, the electrons absorb energy and jump to higher energy state. On coming back to the lower energy siate, they emit light, which we can observe in Emission spectra Raman spectra Fluorescence Absorption spectra Emission spectra Raman spectra Fluorescence Absorption spectra ANSWER DOWNLOAD EXAMIANS APP
Chemistry The drug ‘Marijuana’ is a Mental stimulant Sedative Hallucinating substance Tranquillizer Mental stimulant Sedative Hallucinating substance Tranquillizer ANSWER DOWNLOAD EXAMIANS APP
Chemistry In upper layer of atmosphere ozone is formed by Subjecting oxygen to high pressure The action of nitrogen on oxygen in atmosphere The action of ultraviolet rays on oxygen The combination of oxygen molecules Subjecting oxygen to high pressure The action of nitrogen on oxygen in atmosphere The action of ultraviolet rays on oxygen The combination of oxygen molecules ANSWER DOWNLOAD EXAMIANS APP
Chemistry What do you understand by the term Espuma ? Calcium Salt Soap Foam Calcium Salt Soap Foam ANSWER DOWNLOAD EXAMIANS APP
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